Question 32Motor Plants - Assistant Engineer

The correct answer is C) crankshaft speed in a two-stroke cycle diesel engine. In a two-stroke cycle diesel engine, the camshaft is designed to rotate at the same speed as the crankshaft. This is necessary to ensure the proper timing and synchronization of the engine's valves and fuel injection system. The camshaft drive, usually a timing chain or belt, maintains the 1:1 ratio between the crankshaft and camshaft speeds, allowing the engine to operate efficiently. The other options are incorrect because: A) In a four-stroke cycle diesel engine, the camshaft rotates at one-half the crankshaft speed. B) In a two-stroke cycle diesel engine, the camshaft rotates at the same speed as the crankshaft, not one-half. D) In a two-stroke cycle diesel engine, the camshaft does not rotate at two times the crankshaft speed.